Attachment for grain-separators.



PATENTED DBG. 12, 1905.

R. W. ROBINSON.

ATTACHMENT FOR GRAIN SEPARATORS.

APPLICATION FILED MAY 1, 1905.

@van 120Mo /Ui Z/ PATENTED DEC. l2, 1905.

R. W. ROBINSON. ATTACHMENT POR GRAIN SEPARATORS APPLICATION FILED MAY l, 1905.

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A vanto/ UNITED STATES lPA'IEN'I OFFIOE.

ATTACHMENT FOR GRAlNj-SEPARATORS.

I No. 806,995.

Specification of Letters Patent.

Patented Dec. 12, 1905.

Application filed May 1, 1905. Serial No. 258,293.

To (MZ whom it may concern.-

Be it known that I, RICHARD WARREN ROBINSON, a citizen of the United States, residing at N eponset, in the county of Bureau and State of Illinois, have invented certain new and useful Improvements in Attachments for Grain-Separators; and I do hereby declare the 'following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to -which it appertains to make and use the separation of the grain.

A further object of my invention is to provide an attachment of the character specified, the parts of which may be cheaply and expeditiously manufactured and readily assembled, each in its respective place, and the complete attachment applied to almost any variety of threshing machine without the necessity of making but few changes therein.

Other objects and advantages will be hereinafter made clearly apparent, reference being had to the accompanying drawings, which are made a part of this application, and in which- Figure 1 shows alongitudinal sectional view of a threshing-machine or grain-.separator with my invention applied to use thereon. Fig. 2 is a sectional view of Fig. 1 on line 2 2. Fig. 3 is a to plan view of my attachment complete rea y for use, a portion thereof being broken away and part of the casing of the separator shown in section. Fig. 4 is a transverse section of Fi 3 on line 4 4.

For convenience of re erence to the various details of my invention and coperating accessories numerals will be employed, the same numeral applying to a similarpart through-- is supported in the usual manner the separator mechanism proper mounted within the casing' 2 of the usual or any preferred construction, and as the interior parts of the separator may be of the common or any desired variety I deem it unnecessary to specifically refer to all of the details involved in said machine, calling attention only to those portions which serve as accessories to my attachment. V

`It will be understood that my attachment is located in position at or substantially near the middle of the machine and consists of the teeth-carrying drum 3, rotatably vmounted in any preferred way, as upon the shaft 4, said drum being provided with a plurality of teeth 5, designed to engage the mass of straw and grain as it comes from the conveyingapron 6, which latter is placed in communication at its forward end with the threshingcylinder 7 common to all threshing-machines.

Designed to cooperate with the rotating tooth-carrying drum 3 is a plurality of curved bars 8, which conform to the periphery of the drum 3, lying in close approximation thereto, each end of said curved bars being reliably anchored and secured in position, as by the cross-bar 9, (more clearly shown in Fig. 3,) and which is preferably fastened at its ends to the side walls l2 of the machine. The curved bars 8 may be readily and cheaply formed in any desired way, as by shaping the same from a rod or bolt.

The teeth 5 may be anchored in place in a great variety of ways; butI preferably secure them in the manner shown in the drawings. As disclosed, particularly in Fig. 4, the teeth are inserted through bars 5EL and are provided with heads to limit their movement therethrough. The bars are then inserted within grooves formed within drum 3, and when they are secured therein they will hold the teeth against displacement. It will be noticed that the heads of the teeth are angular, and therefore the same cannot rotate after once being fastened in place.

It will be understood that one end of the shaft 4 may be extended beyond the casing or side walls 12 of the machine and a suitable driving-pulley (not shown) secured thereto vand properly connected, as by belting, with some driving part of the machinery, whereby the cylinder or drum 3 will be rotated at the desired speed to insure the best results.

By reference to Fig. l it will be seen that IOO IIO

the threshed grain incorporated with the straw, &c., will pass through the cylinder 7 and onto the conveyer 6 and thence delivered upon my agitating attachment, the teeth of which will lift the mass of straw, grain, &c., commingled therewith and prevent the same from becoming hunched and at the same time permit the loose grain, &c., to drop down past the cylinder or drum 3 onto the riddles and other parts provided to receive the same and thoroughly cleansed by action of the blast-fan or blower, as is common. Inasmuch as the drum 3 is rotated at a proper speed, thorough agitation of "the commingled mass of straw and grain will be attained, whereby the mass will be thoroughly loosened, as before explained, and thus insure that any grain lodged therein and carried thereby will be loosened and permitted to fall out of the straw and cleansed by the blower.

By referring to Fig. l it will be noticed that I utilize the deflector 13, which is located beyond the curved bars 8 and has a lever 14 extending from it adapted to be locked in any suitable manner in any position to which it may be adjusted. I preferably provide a toothed segment 15 for securing the lever, By mounting the deiiector in the manner shown and described the same can be adjusted to suit different conditions of grain. Moreover, by curving the dellector the grain carried with the straw is directed downward to the receptacle provided for it.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a grain-separator the combination with a conveyer; of a cylinder rotatably mounted adjacent thereto and having longitudinally extending grooves therein, bars seated within the grooves, curved teeth extending through the bars and beyond the surface of the drum, said teeth having heads seated within the bars, a plurality of bars anchored adjacent the conveyer and extending between the paths of the teeth, said bars having smooth unbroken surfaces and concentric for a part of their length with the drum, the other end of the bars being free.

2. In a grain-separator the combination with a conveyer; of a rotary toothed drum adjacent thereto, a plurality of bars anchored between the drum and conveyer and extending between the paths of the teeth, said bars being free at one end and concentric for a part of their length with the drum, and an adj ustable deflector-plate above and adjacent the free ends of the bars.

3. In a grain-separator, the combination with a conveyer; of a cylinder rotatably mounted adjacent thereto and having longitudinally extending grooves therein', bars seated within the grooves, and teeth extending through the bars and beyond the surface of the drum, sa'id teeth having heads seated within the bars.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

RICHARD WARREN ROBINSON.

Vitnesses B. A. RoLLrNs, C. M. CARPENTER. 

